Hello, i have a problem with my sound. there is a Yellow Question mark beside Audio Device on High Definition Audio Bus. I have a Windows XP SP3. The Computer model i use is IBM ThinkCentre M52 8215 EKU. This is the error i get in System Information: Code: Audio Device on High Definition Audio Bus HDAUDIO\FUNC_01&VEN_11D4&DEV_1981&SUBSYS_101402F9&REV_1002\4&310C0C77&1&0001 The drivers for this device are not installed.